Home / 5,127.46-7,691.40-2,660.69

Finding the Fourth Proportional to 5,127.46, 7,691.40 and 2,660.69

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Solution

The fourth proportional to 5,127.46, 7,691.40 and 2,660.69 is: 3,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.46 : 7,691.40 = 2,660.69 : x
  2. Step 2: Convert to fraction form
    5,127.46/7,691.40 = 2,660.69/x
  3. Step 3: Cross multiply
    5,127.46x = 7,691.40 × 2,660.69
  4. Step 4: Simplify right side
    5,127.46x = 20,464,450.29
  5. Step 5: Solve for x
    x = 20,464,450.29/5,127.46
  6. Step 6: Final answer
    x = 3,991.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.